Arun, 20 Jan 2015Have anyone upgraded from Jellybean 4.3 to Kitkat 4.4.2???Many Peoples upgraded this fone to Kitkat 4.4.2. For me there is not much differences from jellyben to kitkat. Almost all are same. If you want to update it first make sure the strength of network. Almost 400 mb size need to download and install. And any interruption during the upgrade may affect the phone. Allow sufficient time for this process and follow the instruction during the installation. Make sure your battery charged more than 70% before start the upgrade.

In my experience the is no any heating problem or auto shutdown in this fone. But little lag and it will not work in 2G network.

AnonD-2348, 03 Feb 2015i upgraded my unit today using kies 3. and unfortunately, i have discovered that i can no long... moreThe software update was not done properly and this resulted in corruption of your sofware.... get the software reinstalled from the nearest samsung care centre....

i upgraded my unit today using kies 3. and unfortunately, i have discovered that i can no longer make a call after the update. it displays "unfortunately, the process com.android.phone has stopped". with this, the other line that im calling can only hear me for 3 sec and then it exits and hangs up.

Samsung has done an excellent job delivering the Android 5.0
Lollipop update to the Galaxy S5, turning a new page in the
book of Software Updates. We already know that the Android
5.0 Lollipop update will be provided to all the galaxy flagship
devices including the Galaxy Note 4, Galaxy Alpha, Galaxy Note
3 and Galaxy S4, but it seems that Samsung might be planning
to show a little love to its mid range galaxy owners also. In a
new report from our sources at Samsung, it has been indicated
that Five Mid Range devices are also being considered for the
Lollipop 5.0 update. The devices that were lucky enough to make
it are – Galaxy Grand 2, Galaxy Note 3 Neo, Galaxy S5 Mini,
Galaxy Mega 2 and Galaxy Grand Prime.